I had ordered Carlo Scarpa: Glass of an Architect, and it arrived today. I looked to see if this piece is in there under Battuto, and it's not, despite there being many other example. (BTW. Battuto is called Hammered in this book, a straight translation, I think, and was used first by Scarpa in 1940.) Deboni in his Veninni books doesn't include this shape in his pictures of battuto pieces, either. Also, as I mentioned, the Scarpa piece in "Venini" by Santillana does have a foot and I'm not sure whether your piece does.
What am I saying? I think your piece is Venini and fabulous, and it's probably worth more if it can shown to be by Scarpa. I wouldn't make that claim right now, although I wouldn't say it's not by Scarpa. If you're interested in finding out, my suggestion is to send a series of pictures to Venini and see what they say.